nodapic
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2 answers
10 votes
2k views
Is it possible to convert a passenger A380 to carry cargo?
Accepted answer
17 votes

Airbus originally planned on a freighter version and UPS and FedEx both ordered some of them. Production delays with the passenger version resulted in the freighter version being delayed and both of ...

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3 answers
17 votes
9k views
Why isn't an LPV SBAS approach considered a precision approach according to ICAO?
10 votes

Precision Approaches (PA), as you mention, have specific performance requirements, one of which is how "good" the vertical position measurement must be during an approach. In the case of a PA, ground ...

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2 answers
9 votes
431 views
How unusual is it for remotely piloted aircraft to fly through commercial or general aviation airspace?
Accepted answer
8 votes

In the US, the main operators of large UAS (i.e. non CFR Part 107 aircraft) are Air National Guard (MQ-9) and the Department of Homeland Security (Customs and Boarder Protection, also MQ-9). Here is a ...

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1 answers
2 votes
266 views
What airfoil simulation software is suitable for a cut trailing edge?
Accepted answer
7 votes

One tool you might want to consider is MIT's XFoil. I'm not sure I fully understand what you'd like to do, but this tool is used in many of MIT undergraduate aerodynamics classes. If you think it ...

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11 answers
96 votes
88k views
Can someone actually "fly under the radar"?
7 votes

To your question of "how low": In the US, radar coverage is generally pretty good, but there is a distinct floor below which an aircraft cannot be picked up by a radar system. The figure below shows ...

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1 answers
2 votes
475 views
What does the ASDE-X ground radar unit look like?
3 votes

This page claims to show the Raetheon ASDE antenna at Boston Logan. However, Saab Sensis appears to be the prime contractor for the ASDE-X system. Boston does have an ASDE-X system, according to the ...

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2 answers
9 votes
274 views
Received ADS-B TC=31 message with non-existent version 3?
2 votes

According to the FAA's Advisory Circular AC20-165B, numbers higher than 2 are allowed: A.2.34 Version Number. The applicable TSO Minimum Operational Performance Standard (MOPS) level is ...

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2 answers
2 votes
373 views
How many active Cessna 172 aircraft (or any other make/model) are there in the United States?
0 votes

I'm accepting Jordy's answer as it provided the key to getting this figured out. Below is a first draft of the analysis I was trying to complete. There are some inconsistencies with how the FAA's ...

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3 answers
4 votes
430 views
Does turning off WAAS turn off ADS-B out as well?
0 votes

Interpreting your question more broadly along the lines of "would I be non-compliant with the ADS-B Out Rule": RTCA's DO-260, the standard that defines requirements for 1090ES ADS-B Out and In ...

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